The calcium sulphate dihydrate whisker is treated by microwave heating, forming calcium sulfate hemihydrate or anhydrous sulphate of calcium after dehydration.
采用微波加热处理二水硫酸钙晶须，脱水后成为半水或无水硫酸钙晶须。
2
And The best recipe was drawn as follows: ammonium sulphate 0.5%, ferrous sulfate 0.2%, potassium phosphate dibasic 0.1%.